Chosen Solution

My Oppo A7 is stuck on the lock screen, and when I tried to restart the device by pressing the power off button, the screen for powering off or restarting appeared, but I could not restart it since it was unresponsive to touch. Please kindly guide me on how to fix this issue.

Disconnect the battery, leave for a few minutes then reconnect it. Try turning it on and see if it works.